55 results about "Hydrogen peroxide breakdown" patented technology

The invention discloses a hydrogen peroxide catalytic reactor for an ultrapure water production system, the ultrapure water production system and a method for continuously producing ultrapure water. A central water distributor in the hydrogen peroxide catalytic reactor is filled with a hydrogen peroxide decomposition catalyst, hollow fiber membranes are arranged around the central water distributor, nitrogen is introduced into the upper ends of the hollow fiber membranes during continuous operation, and the lower ends of the hollow fiber membranes are connected into a vacuum source. The water distributor is divided into three sections by arranging the baffles, the water distributor sequentially passes through the water distributor from bottom to top during operation, hydrogen peroxide carried in pure water to be treated is decomposed into water and oxygen under the action of a catalyst, and dissolved oxygen also enters the hollow fiber membrane to be removed. The problem that the catalytic activity is reduced due to excessive enrichment and oxidation of oxygen on the surface of the hydrogen peroxide decomposition catalyst is effectively avoided, and long-time online operation can be realized without increasing the filling amount of the catalyst.

A catalytic structure can comprise a catalyst and one or more radical scavengers. Each radical scavenger can comprise one or more nanoparticles. Each nanoparticle can be formed as an oxide or oxynitride and can comprise at least one metal selected from titanium (Ti), zirconium (Zr), hafnium (Hf), rutherfordium (Rf), vanadium (V), niobium (Nb), tantalum (Ta), and dubnium (Db). In some embodiments, the radical scavenger can be used in an oxygen reduction reaction, for example, to decompose hydrogen peroxide into water and oxygen. In some embodiments, the catalytic structure with radical scavengers can exhibit enhanced durability, for example, when incorporated into a proton-exchange membrane (PEM) fuel cell.

The invention provides a hybrid power system for a dual-mode patrolling bomb and a use mode of the hybrid power system, and belongs to the technical field of aviation power. The problem that an existing patrolling bomb power system is difficult to meet the requirements for long-time cruising and instantaneous explosion acceleration at the same time is solved. The system comprises a hydrogen supply mechanism, a hydrogen peroxide supply mechanism, a fuel cell, a motor and a combustion chamber, the hydrogen supply mechanism is connected with an anode of the fuel cell, the fuel cell is connected with the motor, the motor is connected with a propeller, and the hydrogen peroxide supply mechanism is provided with two supply lines. The first supply line is connected with a cathode of the fuel cell through the hydrogen peroxide decomposition unit, the second supply line is connected with the combustion chamber, a first flow regulating valve is arranged on the first supply line, a second flow regulating valve is arranged on the second supply line, a grain is arranged in the combustion chamber, and the grain is spontaneous combustion fuel with a metal framework. The combustion chamber is connected with the exhaust nozzle. The hybrid power device is mainly used for providing hybrid power for the dual-mode patrol ammunition.

The invention discloses a method for efficiently producing pyridoxal phosphate based on a three-enzyme cascade reaction and a recombinant strain, and belongs to the technical field of biological engineering. The recombinant escherichia coli for co-expressing the pyridoxine phosphate phosphatase mutant, the pyridoxine phosphate oxidase and the hydrogen peroxide decomposing enzyme is constructed, three-enzyme synergy is realized by optimizing the copy number of a carrier, and the catalytic efficiency of a recombinant strain as a cell catalyst is improved. The invention further provides a one-pot method for preparing pyridoxal phosphate, the production cost is reduced, an efficient, green and economical biosynthesis path is provided for industrial production of PLP, and the method can be widely applied to the fields of food, medicine and the like and has important industrial value and application prospects.

The utility model relates to the technical field of advanced treatment of landfill leachate, and discloses an ultraviolet-hydrogen peroxide oxygen-based advanced treatment mechanism for landfill leachate, which comprises a reaction barrel, a water inlet pipe is fixedly connected to the side wall of the reaction barrel, a top cover is arranged on the upper surface of the reaction barrel, an output pipe is fixedly connected to the side wall of the reaction barrel, and a water outlet pipe is arranged on the side wall of the reaction barrel. A settling box is arranged on the side wall of the output pipe, a filtering box is arranged on the side wall of the settling box, an activated carbon plate is arranged in the filtering box, a water outlet pipe is fixedly connected to the side wall of the filtering box, a deep treatment mechanism is arranged on the side wall of the reaction barrel, and a fixing assembly is arranged on the side wall of the activated carbon plate. According to the device, the ultraviolet lamp is started for irradiation, meanwhile, hydrogen peroxide is conveyed into the reaction barrel through the metering pump, under irradiation of ultraviolet light, the hydrogen peroxide is decomposed to generate hydroxyl free radicals, landfill leachate is gradually degraded into small molecular substances, and through the structure, the treatment capacity of the device is improved, and the operation cost is reduced.

The invention provides a diagnosis and treatment integrated nano platform as well as a preparation method and application thereof. According to the diagnosis and treatment integrated nano platform, an organic-inorganic nano hybrid is constructed through structure optimization and function integration, four modes of PTT, PDT, SDT and CDT are organically combined innovatively, and efficient synergistic treatment of GBM is achieved through real-time monitoring of photoacoustic imaging. First, a dOMV encapsulation strategy significantly improves the ability to penetrate through the blood brain barrier. Meanwhile, the IEICO-4F has a strong near-infrared absorption characteristic and has a synergistic effect with the high catalytic activity of the mesoporous platinum nanoparticles. Under the laser / ultrasonic excitation condition, the diagnosis and treatment integrated nano platform shows excellent photo-thermal conversion performance, the Fenton reaction rate can be increased, endogenous hydrogen peroxide can be continuously catalyzed to be decomposed to generate oxygen, and the tumor hypoxia state is effectively relieved. The series of reactions further enhance the generation of ROS, activate a Caspase-1 / GSDMD mediated pyroptosis pathway, finally achieve an efficient tumor inhibition effect, and successfully break through the limitation of a single treatment mode.

The present invention discloses a method for treating caprolactam wastewater. By separately mixing and hierarchically treating the wastewater from multiple process sections in the production of caprolactam by the toluene method, the wastewater from multiple process sections can be integrally treated, reducing the content of heavy metals and organic substances while saving the resources required for wastewater treatment, meeting the influent requirements of the biochemical system, improving the biodegradability of the wastewater, and solving the defects in the prior art that the biochemical treatment effect of caprolactam wastewater by the toluene method is weak and harmful to the biochemical treatment system; the residual cobalt salt catalyst and palladium-carbon catalyst in the wastewater have a promoting effect on the oxidation-reduction reaction of ferrous salt and hydrogen peroxide. Various salts have different catalytic mechanisms and active sites, providing multiple catalytic pathways for the decomposition of hydrogen peroxide, increasing the number of active centers of the reaction, and thus significantly improving the decomposition rate of hydrogen peroxide.

To optimize an amount of addition of a catalase to water to be treated when performing decomposition treatment of hydrogen peroxide in the water to be treated by adding the catalase in order to obtain treated water.SOLUTION: An additive amount calculation device 30 is provided which calculates a catalase additive amount or additive concentration. The additive amount calculation device 30 includes: a database 31 which stores data for derivation of an amount of catalase required for decomposition of hydrogen peroxide; an input unit 32 which receives an input of a hydrogen peroxide concentration of water to be treated, a pH of the water to be treated, and a treatment target value (values of both target treatment time of the decomposition of the hydrogen peroxide and a target hydrogen peroxide concentration in treated water); and a calculation unit 33 which searches the database 31 on the basis of the input to the input unit 32 and calculates the catalase additive amount or additive concentration for the decomposition of the hydrogen peroxide.SELECTED DRAWING: Figure 1

This invention provides a collagen biphase crosslinked material, its preparation method, and an implantable scaffold. It relates to compositions of polymeric compounds and also to the field of medical materials technology. This application provides a method for preparing a collagen biphase crosslinked material. During the nucleation phase, a low concentration of hydrogen peroxide is introduced to synergistically promote collagen self-assembly and hydrogen peroxide crosslinking. During the growth phase, a higher concentration of hydrogen peroxide solution is added to allow the covalent crosslinked network to form synchronously with fiber extension. The growth phase self-assembly control process can significantly extend the collagen self-assembly time, resulting in more thorough crosslinking and achieving structure-function synergy at the molecular scale. Finally, hydrogen peroxide decomposes into water and oxygen, leaving no crosslinking agent residue. The prepared collagen biphase crosslinked material exhibits good mechanical properties and resistance to enzymatic degradation, and the complete in vivo degradation time can be controlled between 12 and 24 months.

The invention belongs to the technical field of bacterial detection, and provides a nano-composite probe system, application thereof and a single-channel micro-fluidic chip for detecting the number of bacteria and the drug resistance level of the bacteria, and the nano-composite probe system comprises a phage embedded magnetic bead probe and an AIE (at) Ag (at) MnO2NFs composite probe. The Ag-MnO2 nanoflower surface modified AIE (Raman reporter molecule) composite probe can realize a strong Raman signal, Ag-coated MnO2 catalyzes decomposition of hydrogen peroxide to push a red dye to move so as to realize a distance signal, and magnetic bead-bacteriophage is used as a recognition element of target bacteria and realizes magnetic separation and enrichment at the same time. Based on high specificity and good environmental tolerance of the phage, the Ag-MnO2 nanoflowers enhance Raman signals of AIE Raman reporter molecules, dual-mode signal internal correction realizes the stability of the sensor and the interference resistance to factors such as environment and experiments, and the specificity of a detection strategy and the accuracy of on-site analysis are improved.

The invention relates to a preparation method and application of high-temperature-resistant inorganic modified bentonite. The method comprises the following steps: firstly, treating bentonite and sepiolite composite clay through a microwave-assisted hydrogen peroxide method, and improving the dispersity of minerals by utilizing a large amount of oxygen generated by decomposing hydrogen peroxide in a microwave field; then metal oxide nanoparticles are added into the suspension of the composite clay mineral, and sepiolite and metal oxide are used for synergistically modifying bentonite, so that the high-temperature tolerance of the material at 250 DEG C is improved, and the material can be used as a slurry making agent in water-based drilling fluid. No organic reagent is used, and related products have good thermal stability.

The invention discloses a method for simultaneously degrading organic wastewater and reducing precious metals, and belongs to the technical field of sewage treatment and metal recovery. The invention provides a novel laser-driven electrochemical battery aiming at the defects of the traditional technology in the field of synchronous degradation of organic wastewater and reduction of noble metal ions. According to the cell, titanium serves as an anode, platinum serves as a cathode, electron migration is driven through the potential difference between the two electrodes, and electrochemical reduction of silver ions is achieved. And meanwhile, laser is adopted to irradiate the anode to excite and form plasma, so that water and hydrogen peroxide are decomposed to generate hydroxyl radicals to efficiently degrade MB. In addition, the laser also has the capabilities of directly photolyzing MB and enhancing the electrochemical activity of the cell to synergistically promote the rapid reduction of Ag (I). The invention provides an efficient and green new way for organic wastewater treatment and precious metal resource utilization.

The invention relates to a method for producing cyclohexanol and cyclohexanone by cyclohexane oxidation, which comprises the following steps: (1) carrying out molecular oxygen oxidation on cyclohexane under a non-catalytic condition to obtain an oxidation solution containing cyclohexyl hydrogen peroxide; (2) adding a cyclohexyl hydroperoxide decomposition catalyst and a scale inhibitor into the obtained oxidation liquid, carrying out multiple-effect reactive distillation to decompose cyclohexyl hydroperoxide into cyclohexanol and cyclohexanone, recovering unreacted cyclohexane in the step (1), and returning to the step (1); and (3) adding alkali liquor into the decomposition liquid containing 50-70% of cyclohexane obtained after rectification, and carrying out a neutralization saponification reaction to completely convert residual cyclohexyl hydrogen peroxide into cyclohexanol and cyclohexanone so as to obtain an alcohol-ketone mixture. According to the method disclosed by the invention, cyclohexyl hydroperoxide decomposition and cyclohexane recycling are combined into one step, and a large-scale alkali liquor separation process is not needed any more, so that the production efficiency is greatly improved, and the production cost is reduced.

The invention is applicable to the technical field of titanium alloy surface treatment, and provides a titanium alloy nitric-acid-free chemical polishing solution and a preparation method thereof, and every 1L of the polishing solution comprises the following components: 100-150g of ammonium bifluoride, 150-250g of hydrogen peroxide with the concentration of 50%, 200-350g of phosphoric acid with the concentration of 85%, 60-120g of modified ethylene glycol, 10-20g of a compound stabilizer, 5-10g of a modified corrosion inhibitor and the balance of water. The modified ethylene glycol is ethylene glycol modified by a silane coupling agent KH550, and the modified corrosion inhibitor is a modified product of thiourea grafted maleic anhydride; through raw material modification and component synergy, the titanium alloy surface treatment effect can be improved, generation of nitric oxide toxic gas can be completely eradicated, decomposition of hydrogen peroxide and excessive corrosion of titanium alloy are avoided, and the polishing solution is suitable for efficient and environment-friendly polishing of titanium alloy parts in complex shapes.

The invention relates to the field of hydrogen peroxide decomposition, and discloses a method for catalytically decomposing hydrogen peroxide in a methanol aqueous solution. The invention relates to a method for catalytically decomposing hydrogen peroxide in a methanol aqueous solution, which comprises the following steps: in the presence of a catalyst, carrying out decomposition reaction on the methanol aqueous solution containing hydrogen peroxide under the conditions that the temperature is 30-100 DEG C; wherein the catalyst comprises a titanium silicalite molecular sieve with an MFI topological structure and aluminum oxide; on the basis of the total amount of the catalyst, the content of the titanium silicalite molecular sieve with the MFI topological structure is 40-90% by mass, and the content of the aluminum oxide is 10-60% by mass; and the side pressure crushing strength of the catalyst is 70-150N / cm. According to the method, a catalyst containing a titanium silicalite molecular sieve with an MFI topological structure and aluminum oxide is selected, the mass fraction of hydrogen peroxide can be reduced, meanwhile, a large amount of loss of active components is avoided in the long-period operation process, and the decomposition activity is kept stable.

The invention relates to the field of hydrogen peroxide production, in particular to a hydrogen peroxide decomposition inhibition device for hydrogen peroxide production, which comprises a tank body, the device further comprises a feeding pipe; a cooling cavity is formed in the tank body; the tank body is communicated with a feeding pipe, and the feeding pipe is provided with a feeding valve; the tank body is communicated with a discharge pipe, and the discharge pipe is provided with a discharge valve; the tank body is fixedly connected with a plurality of spring rods I; the telescopic ends of all the spring rods I are jointly and fixedly connected with a cover plate, and the cover plate makes contact with the tank body. The cover plate is fixedly connected with a circular plate, and the circular plate is slidably connected with the interior of the tank body. When the water bag sprays water to dilute the hydrogen peroxide in the leakage area, the electromagnetic valve is controlled to be opened, so that cooling water in the cooling cavity enters the water bag, water in the water bag is cooled, then the hydrogen peroxide in the leakage area is cooled by the cooling water sprayed out of the water bag, and the decomposition rate of the leaked hydrogen peroxide is effectively restrained.

The invention provides a continuous production process of o-hydroquinone and hydroquinone, and relates to the technical field of chemical synthesis. According to the invention, phenol and hydrogen peroxide are used as raw materials, and high-purity catechol and hydroquinone products are continuously produced through a reaction process, a filtration process, a hydrogen peroxide decomposition process, an extraction process and a refining process. The filtering procedure, the extracting procedure, the extracting agent recycling procedure, the primary phenol recycling procedure, the tar removing procedure, the secondary phenol recycling procedure, the catechol refining procedure and the hydroquinone refining procedure which are connected in sequence are arranged to separate and purify materials after reaction, the whole technological process is short, and the yield is high; the extraction process is adopted to replace the dehydration rectification operation in the traditional process to remove the phenol-containing wastewater, so that the phenol recovery rate is increased, and the subsequent wastewater treatment burden is reduced; the tar removal operation is performed before the secondary phenol recovery operation, so that the retention time of tar impurities in the whole process system is shortened, the process safety is improved, and the subsequent operation risk is reduced.

The invention provides a collagen biphasic system cross-linking material, a preparation method thereof and an implantation stent, relates to a high-molecular compound composition, relates to a high-molecular compound composition, and also relates to the technical field of medical materials. According to the preparation method of the collagen two-phase system cross-linking material, in the nucleation period, low-concentration hydrogen peroxide is introduced, so that collagen self-assembly and hydrogen peroxide cross-linking are carried out synergistically; in the growing period, a hydrogen peroxide solution with relatively high concentration is added, so that a covalent cross-linked network and fiber extension are synchronously formed, and a self-assembly regulation process in the growing period can greatly prolong the collagen self-assembly time, so that cross-linking is more thorough, and structure-function synergy on a molecular scale is realized; finally, hydrogen peroxide is decomposed into water and oxygen, no crosslinking agent is left, the prepared collagen biphasic system crosslinking material has good mechanical performance and enzymolysis resistance, and the in-vivo complete degradation time can be controlled within 12-24 months.

To provide a detergent set and a washing method in which bubbles generated after mixing an enzyme with washing treatment water containing hydrogen peroxide are conspicuous.SOLUTION: The detergent set includes an oxidizing agent which is an inorganic peroxide generating hydrogen peroxide in the presence of water, an alkaline agent, an enzyme having catalase activity decomposing hydrogen peroxide into water and oxygen, and an amphoteric surfactant, wherein the oxidizing agent and the enzyme are stored in a non-reactive state.SELECTED DRAWING: Figure 1

The present disclosure relates to a fuel cell including a durability-enhancing layer and a method for manufacturing the same. The fuel cell includes: an electrolyte membrane-electrode assembly; a durability-enhancing layer formed on at least one side of the electrolyte membrane-electrode assembly; and a gas diffusion layer formed on a side of the durability-enhancing layer opposite the side on which the electrolyte membrane-electrode assembly is formed. The durability-enhancing layer includes a hydrogen peroxide decomposition catalyst and a hydrogen ion conductive polymer and is formed on at least a portion of at least one side of the electrolyte membrane-electrode assembly.

The application belongs to the technical field of fine chemical industry, and particularly relates to a continuous flow synthesis method and device of diene diepoxide. The method comprises the following steps: mixing an organic phase containing a diene compound, a catalyst and a pyridine-acetic acid ligand, and an aqueous phase containing hydrogen peroxide and a specific buffer system through a micro-mixer to form a water-in-oil micro-dispersion system; making the micro-dispersion system enter a micro-reactor to perform an epoxidation reaction; then performing cooling treatment on the reaction liquid; removing the aqueous phase through a membrane separator; and obtaining the diene diepoxide through post-treatment. By introducing the buffer system, the pH of the reaction system is stabilized at 10.5-12.0, the decomposition of hydrogen peroxide and the deactivation of methyltrioxorhenium are effectively inhibited; in combination with the continuous flow technology, the reaction process is accurately controlled and intrinsically safe, and the reaction time is significantly shortened; and the conversion rate of the diene compound and the yield of the target epoxide are both significantly improved.

To provide a water treatment apparatus and a water treatment method capable of recovering ammonia contained in ammonia / hydrogen peroxide-containing water, which contains ammonia and hydrogen peroxide while reducing the number of pH adjustment steps and an amount of chemicals used.SOLUTION: A water treatment apparatus 1 includes: a hydrogen peroxide decomposition apparatus 12 that decomposes hydrogen peroxide in ammonia / hydrogen peroxide-containing water containing ammonia and hydrogen peroxide; and a semipermeable membrane treatment device 5 that obtains semipermeable membrane concentrated water by passing hydrogen peroxide decomposition treated water through a first space 20 by using a semipermeable membrane module 16 having the first space 20 and a second space 22 partitioned by a semipermeable membrane 24, and pressurizing the first space 20 to permeate water contained in the hydrogen peroxide decomposition treated water through the semipermeable membrane 24, and obtains semipermeable membrane diluted water by passing a part of the hydrogen peroxide decomposition treated water or at least a part of the semipermeable membrane concentrated water through the second space 22.SELECTED DRAWING: Figure 1

The present invention relates to the field of scramjet technology and addresses the technical issues of scramjet engines, such as the difficulty of wide-area organized combustion and flame stabilization. In particular, it relates to an integrated module for atomized injection cavity for catalytic decomposition of hydrogen peroxide and a method for enhancing injection flame stabilization. The module utilizes a catalytic decomposition module to decompose liquid hydrogen peroxide into high-temperature oxygen and water vapor. The decomposed gas is then mixed with kerosene in a pipeline to form kerosene atomized with the high-temperature oxygen and water vapor. The kerosene is then atomized and injected laterally upstream of the cavity through atomized kerosene nozzles, forming a transverse jet of atomized kerosene within a supersonic combustion chamber, thereby improving combustion efficiency. By forming an oxygen-enriched jet within the supersonic combustion chamber that enhances combustion performance, the present invention can help improve the ignition performance of liquid kerosene, while also reducing the atomized particle size and increasing the jet penetration depth, thereby improving gas mixing efficiency and broadening the range of flame stabilization for supersonic combustion of liquid kerosene.

The invention relates to the technical field of strain preservation, and discloses strain preservation equipment with a disinfection function and a disinfection method.The strain preservation equipment comprises a device frame, a primary filtering part is arranged on the device frame, the primary filtering part comprises a primary filtering cover, three sliding rods are connected to the inner wall of the primary filtering cover in a surrounding mode, each sliding rod is of an L-shaped structure, and the primary filtering cover is provided with a secondary filtering part; a tray is connected to the inner wall of a cover opening in the bottom end of the primary filter cover, the top edge of the inner wall of the tray is of an inclined plane structure, caulking grooves corresponding to the three sliding rods are formed in the top of the outer wall of the tray in a surrounding mode, the bent portions of the three sliding rods are inserted into the inner walls of the three caulking grooves respectively, and a pressing disc is arranged in the primary filter cover; the primary filtering part is adopted to filter and intercept impurities and propagules to reduce the sterilization load, the first sterilization part destroys spore structures and preliminarily kills spores by using high-concentration hydrogen peroxide, and the second sterilization part thoroughly inactivates residual spores through high-temperature and high-pressure steam, and accelerates decomposition of hydrogen peroxide at high temperature to avoid chemical residues.

Systems and methods for purifying aqueous solutions include a hydrogen peroxide removal unit including a hydrogen peroxide decomposition media arranged to receive un-treated aqueous solution. The hydrogen peroxide decomposition media includes a platinum group catalyst that includes beads with a density of at least 1 gram / milliliter (g / ml).

The application belongs to the technical field of space environment disinfection, and provides a self-supporting multi-component composite nano catalyst for decomposing and vaporizing hydrogen peroxide and a preparation method thereof. The composite nano catalyst is an AlCrFePt / NF quaternary composite nano catalyst, which comprises a catalyst active component and a catalyst active component carrier. The catalyst active component is composed of Al, Fe, Cr and Pt, the catalyst active component carrier is foam nickel, and the catalyst active component is uniformly loaded on the surface of the catalyst active component carrier base. The composite nano catalyst can efficiently decompose hydrogen peroxide into water and oxygen, and has good stability. The preparation method is a one-pot hydrothermal method, which does not require special instruments and equipment, is simple in process, cost-saving, easy to operate, and suitable for large-scale production. The problems of high cost and low catalytic efficiency of the catalyst for decomposing and vaporizing hydrogen peroxide are solved.

Provided are a chemical decontamination method and a chemical decontamination apparatus capable of preventing deterioration of a metal ion exchange resin and performing decontamination at a low cost in a short time.The chemical decontamination method of the invention includes: a reduction decontamination step of supplying a reduction decontamination solution to a decontamination target portion and performing reduction decontamination on a surface of a member constituting the decontamination target portion; a hydrogen peroxide decomposition step of decomposing hydrogen peroxide contained in the reduction decontamination solution after the reduction decontamination step; and a metal ion removing step of removing a metal ion contained in the reduction decontamination solution after the hydrogen peroxide decomposition step.

Provided are a water treatment device and a water treatment method that make it possible to recover ammonia contained in ammonia / hydrogen peroxide-containing water, which contains ammonia and hydrogen peroxide, while reducing the number of pH adjustment steps and the amount of chemicals used. A water treatment device (1) comprises: a hydrogen peroxide decomposition device (12) that decomposes hydrogen peroxide in ammonia / hydrogen peroxide-containing water, which contains ammonia and hydrogen peroxide; and a semipermeable membrane treatment device (5) that uses a semipermeable membrane module (16) having a first space (20) and a second space (22) partitioned by a semipermeable membrane (24) to obtain semipermeable membrane-concentrated water by passing the hydrogen peroxide decomposition-treated water through the first space (20) and causing water contained in the hydrogen peroxide decomposition-treated water to permeate through the semipermeable membrane (24) with the first space (20) pressurized, and obtain semipermeable membrane-diluted water by passing a portion of the hydrogen peroxide decomposition-treated water or at least a portion of the semipermeable membrane-concentrated water through the second space (22).

The invention discloses a choline dehydrogenase analysis sensing method based on a tetrahedral programmable artificial enzyme and application of the choline dehydrogenase analysis sensing method in gastric cancer. According to the sensor, a Poly-A tetrahedral gold cluster is used as a catalyst, hydrogen peroxide (H2O2) is effectively promoted to be decomposed to generate hydroxyl free radicals (. OH), the free radicals oxidize o-phenylenediamine (OPD) from a colorless state to yellow oxOPD, and a fluorescence emission peak at the wavelength of 563 nm and an ultraviolet absorption peak at the wavelength of 420 nm are remarkably enhanced. Furthermore, H2O2 is generated through an enzyme reaction channel constructed by choline (Ch) and choline dehydrogenase (CHDH), and enhancement of signal peaks can also be observed at the two wavelengths, so that analysis and detection of CHDH activity are indirectly realized, and further effective screening of the CHDH inhibitor is realized. The intelligent sensor has the advantages of high accuracy, quick response, high sensitivity, excellent selectivity, low cost and the like, and shows huge application potential in biomedical research and clinical diagnosis.

In this hydrogen peroxide concentration measurement system, a sample water collection tube (3) is branched into a first passage (4) and a second passage (5), and the first passage (4) can be switched between a dissolved oxygen concentration measurement flow passage (7) and a first circulation flow passage (9). The second passage (5) can be switched between a hydrogen peroxide decomposition flow passage (11) and a second circulation flow passage (13). Further, the dissolved oxygen concentration measurement flow path (7) can be switched between the discharge pipe (14) and the second circulation flow path (13). In addition, the hydrogen peroxide decomposition flow path (11) can be switched between the discharge pipe (14) and the first circulation flow path (9). As a result, it is possible to switch between the continuous flow of the sample water (W) from the dissolved oxygen concentration meter (8) to the catalyst resin column (12) or the continuous flow of the sample water (W) from the catalyst resin column (12) to the dissolved oxygen concentration meter (8). As long as the hydrogen peroxide concentration measurement system is adopted, the time until the measured value after the measurement system is switched is stable can be shortened, and the consumption of sample water is low.